The effect of soil organic matter on the amount of water available to plants is due to organic matter influence on total soil porosity as well as to the water-supplying power of the soil organic matter. true / false.

The answer is true.

Explanation:

It was discovered that a silt loam soil with 6% organic matter will hold more than twice water of a the one with 2% organic matter.

This means that, the more the organic matter in the soil, the more the ability of the soil to hold water for the usefulness of the plants.

the answer would be   10%